<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        //静态方法不用new 对象
        class user{
            static site="baidi.com";
            static show(){
                return this.site;
            }
        }
        class admin extends user{
           a=1;
        }
        console.dir(admin);
       console.log(admin.show());
       console.dir(user.site);
    
    </script>
</body>
</html>